1. Conditional statements and boolean expressions Arithmetic, relational and logical operators

6. boolean expression A boolean expression has only two possible values: true and false. They are commonly found controlling the choice between two paths through a conditional statement. It establishes the criterion for either skipping a group of statements or executing those statements.

19. Will this work? if (noiseDb <= 110) { System.out.println(“Noise is very annoying”); } else if (noiseDb <= 90) { System.out.println(“Noise is annoying”); } else if (noiseDb <= 70) { System.out.println(“Noise is intrusive”); } else if (noiseDb <= 50) { System.out.println(“Noise is quiet”); } else { System.out.println(“Noise is uncomfortable”); }

20. Does the code on the right do the same thing as the code on the left? if (x >= 1) { x = x + 2; } else if (x >= 0) { x = x + 1; } if (x >= 1) { x = x + 2; } if (x >= 0) { x = x + 1; }